摘要: 已知:C(s)+O2(g)====CO2(g) ΔH=-393.5 kJ·mol-1, CO(g)+1/2O2(g) ====CO2(g) ΔH=-283 kJ·mol-1,则C(s)与O2的反应热为( ) A.ΔH=-676.5 kJ·mol-1 B.ΔH=+676.5 kJ·mol-1 C.ΔH=-110.5 kJ·mol-1 D.ΔH=+110.5 kJ·mol-1

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